Combination-tool.



PATBNTED PEB. 12, 1907.

A. GALPERIN. COMBINATION TOOL.

APPLICATION FILED 0CT.19, 19,06.

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PATBNTBD PEB. 12

A. GAL'PERIN. COMBINATION TOOL. APPLICATION FILED 00T.19, 1906.

10.843,936.- PATBNTBD FEB.12,1907.V

A. GALPBRIN.

COMBINATION TOL. APPLIOATION FILED come, 190s.

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UNHCR@ STM@ AARCN GALPERIN, OF CHICAGO, ILLNOIS.

COhflBlNTlONHTOOLn Specieation of Letters Patent.

atented Feb. 12, 1907.

Application iiled October 19, 1906. Serial No. 339,722.

To all whom, t may concern:

Be it known that 1, AARON GALPnnrN, a subject of the Emperor of Russia,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful 1mrovement in Combination-Tools, of which thefollowing is a speciiication.

T he object of my invention is to provide a novel construction oicombination-tool for facilitating the work, particularly of carpenters,joiners, and cabinet-makers, in making dowel-joints.

To this end proved ltool to 1 adapt one end of my im* bore the hole toreceive a dowel-pin and to countersink the outer end ot the hole beingbored and the other end to chamier the projecting end of a dowel-pinaiter it has been inserted in a hole provided to receive it in one boardto facilitate the insertion at that end oi the pin into the holeprovided to receive it in the other oi the two boards to be joined.

r1`he tool is intended to be worked like the common auger by connectinga bit employed in it with a suitable brace.

Referring to the accompanying drawings, Figure 1 is a view in sideelevation of my improved combination-tool; Fig. 2, a similar view of theopposite side of the tool with a stop-bit secured in it, in invertedcondition Vfor chamliering a dewelpin; Fig. 3, a view of the tool in endelevation; Fig. 4, a section taken at the line 4 on Fig. 3 viewed in thedirection oi the arrow and showing a boring-bit adjustably secured inthe tool; Fig. 5, a section taken at the line 5 on Fig. 4 and viewed inthe direction of the arrow; Fig. 6, a section taken at the line 6 onFig'. 4 and viewed in the direction of the arrow; Fig. 7, a plan view ofadjustable means cooperating with the countersink-bit Afor pressingagainst the work being operated on, for gaging the degree oi penetrationof the bit, and for preventing the splintering of the surface of theboard being worked upon; Fig. 8, a section taken at the line S on Fig. 7and viewed in the direction oi the arrow; Fig. 9, a view in sideelevation of the tool, showing a modification of the means i'or holdingthe presser-foot in adjusted relation to the countersinlr-bit; Fig. 10,a view oi a detail of this modification; Fig. 11, a view in endelevation of the tool shown in Fig. 9, and Fig. 12 a top plan view oithe modified form oi presser-foot.

The rame or body of the tool is representthe tool being s hown l j ed at9 and comprises side walls 10 11 and 'l end walls 12 and 13. Mounted inthe Jframe j between its walls is a vertically-disposed member 14,provided on its lower end with a j countersink-bit 15 and on its upperend with j a i'laring concave-convex cutter member 16. The upperextremity of the wall 12 is also pro vided with a rigid 'flaringconcavoconvex i cutter member 17, similar to the member 16, and formingwith the latter a sectional flaring chaniiering implement 1S, havingcutting l edges 19 19 on its relatively adjustable secj tions.

j The member 14 is maintained in adjustable position in the trame bymeans of a setscrew 20, which extends through a threaded opening 21 inthe frame-wall 13 and projects at its inner end, provided with acircumferential groove 22, into a recess 23 in the back of the member14, in which it is held against withdrawal by oppositely-working screws24 24, projecting at their inner ends into said groove7 to therebypermit the screw 2O to be rotated for moving the member 14 back andJrorth. A screw 25 works in a threaded opening 26 in the trame-wall 12and carries at its inner end a channeled head 27, tl-shaped incross-section, which cooperates with the inner end oi a screw 23,likewise extending through a threaded opening 29 in the member 14, forreieasably clamping between them a boring-bit, as the bit 30, to extendbeyond the i'rame vat its upper and lower ends and through thecliamiering-tool, the wall 13 of the iframe having an opening 13a,through which to insert a screw-driver 'for adjusting the screw 28.

j `Mounted in opposite sides of' the trame in j collars 31 32,respectively, are vertically-disposed. screws 33 34, held in adjustableposition by means of milled nuts 35 36 upon them between the respectivepairs Oi collars, said nuts t tl'ording means ior raising and loweringthe respective screws relative to the i'rame. Small screws 37 37 areprovided in one ot each pair of collars to project at their inner endsinto longitudinal grooves 33 in the screws 33 34 tor preventing theturning oi" the l latter when the nuts 35 36 are rotated. r1`he screw 34carries at its lower end a presseri toot 39, which is in the term of anannulus surrounding the boring end and countersinkbits, and comprises a'flanged lower ring 40 i and an upper ring 41, seating upon it to form lbetween the two a ball-race 42 'for balls 43, l the rings being heldagainst separation from lOO ITO

each other by screws 44, which extend through the ring and project attheir inner ends into a circumferential groove in the ring 41 to permitthe upper ring to be rotated on the balls 43 without rotating the lowerring. The screw 34 engages at its lower reduced end correspondingscrewthreads in the ring 4l, whereby the latter is maintained inunvarying relation to said screw, thereby causing the upper ring 4.1 tobe rotated during the operation of the tool, as hereinafter described.The screw 33 is adapted to iit at its reduced end into any one of anarc-shaped series of sockets 46, provided in the upper side of the ring41, to adapt the presser-ring to be secured in any desired position ofadjustment about its screw 34 relative to the countersink-bit for thepurpose of permitting the shoulder hereinafter described in thepresser-ring to be adjusted against the countersink-bit when the latteris adjusted laterally toward and away from the boring-bit. l he ring 41is provided on its inner annular surface adjacent t0l the countersink-bit with a recess 47, forming a shoulder 48, with which in theadjustment of the tool the countersink-bit engages. l

For manipulating the screw 2O I provide on its squared outer end aremovable handle 49, pre.'erably of the construction shown, comprising abar having its opposite ends formed into a screw-driver and lil'e 5l,respectively, adapting the handle to be removed and used for turning thevarious screws described or for ling away burs formed on the surface ofthe wood during the cutting operations.

e operation of the tool is as follows: The screw 20 is turned by itshandle 49 to separate the sections of the chamfering-head andclamping-screws 25 and 28, and thereby permit the insertion through thechamferingtool and frame of the cutting end of a boringbit. The screw 20is then adjusted to bring these sections and the screws 25 and 28 towardeach other and the countersink-bit into close relation to theboring-bit. The screws 25 and 28 are then adjusted to center and rigidlyclamp betwern their inner ends the shank of the boring-bit. Thepresserring is then adjusted upon the screw 34 to cause its shoulder tobear against the countersink-bit, in which position it is secured bylowering` the screw 33 te cause its reduced end to enter one of thesockets 46 registering' therewith. The upper squared end of theboring-bit is then clamped in a brace, (not shown,) and the tool is thanready to be used for boring and countersinking the dowel-pin, receivinghole in the board-as, for example, that shown at 52 in Fig. 2. lt isthus apparent that for the boring operation my iniproved tool assumesthe position illustrated in Figs. 1.3. and 4, with the countersink- Il ll j l l 1 l l l l l j bit extending downwardly. The boring-bit in itsrotation turns with it the entire tool, and as the boring-bit nears thelimit of desired penetration into the board the countersink-bit engagesthe rim of the hole being bored, thereby beveling it as the boring-bitcontinues its boring operation, until the under surface of thepresser-ring abuts against the upper surface of the board being workedupon, when further penetration of the boring and countersink bits, isarrested. The presser-ring serves not only to limit the degree ofpenetration of the bits, ias described, but also to prevent, in itspresser action against the'board in which the hole is being made, anysplintering of the boards surface.

dowel-pin`as, for example, the pin 53- may then be inserted in the hole54 thus bored. The boring-bit may then be removed by turning the screw20 to separate the clamping-screws 25 and 28. The tool is thereuponinverted to cause the chamferingtool to extend downwardly, and astop-bit 55 is inserted into the frame from, the top and between theclamping-screws 25 and 28 to cause its lower end to project a slightdistance into the ohamfering-tool, a scale 56 being provided on theshank of the bit 55 to cooperate with the bottom surface of thepresser-ring, and thereby enable the operator to the extent ofprojection of the end of the bit into the chamfering-tool to cause theproper extent of chamfering of the dowel-pin to be performed. To chamferor sharpen the pin 53, the cliamfering-tool is caused to rest at itsinner tapering surface against the end of the dowel-pin, and as the bit55 is rotated by means of a brace (not shown) the cutting edges of thechamfering-tool engage the edge of the dowel-pin and bevel its end untilfurther downward movement of the tool is arrested by engagement withthat end of the stop-bit 55.

rlhe screw 34, carrying the presser-ring, is adjustable up and down topermit of regulating the pre sser-ring relativo to the countersink-hitto vary the extent of penetration of the latter, and to facilitate theadjustment a scale 57 is provided on the frame to coperate with apointer 58, carried on the upper end of the screw 34.

In Figs. 9 to l2, inclusive, which illustrate my improved tool equippedwith another desirable construction of means for holding thepresser-loot in adjusted position upon the supporting-screw 34 relativeto the countersink-bit, the presser-foot instead of being' provided withan arc-shaped series of sockets 46 is equipped with a series of teeth59, and the screw 33 instead of having a reduced end at which it seatswithin the sockets has its lower end longitudinally slotted, as shown inF ig. l1, and in this slot is pivoted a rocking plate 60, having amutilated toothed segment 6l at one end for engagement with the lOO IIO

teeth 59 and at its opposite end an expanded head 62, against which theinner en of a set-screw 63 in the screw 33 bears to hold the plate inadjusted position on its pivot-bearing.

The operation oi adjusting the presser-foot relative to thecountersinlr-bit is the same as that of the construction heretoforedescribed, excepting that instead of raising the screw 33 to withdrawits reduced end from a socket 46 and again lowering it to eti'ect a newadjustment the plate is turned on its pivot7 thereby by reason of theengagement of its teeth with the teeth 59 turning the presserfoot on thescrew'34 to its position of adjustment relative to thecountersinl-bit,in which adjusted position it may be rigidly maintainedby means of the set-screw 63.

What l claim as new, and desire to secure by Letters Patent, is-

1. In a combination-tool, the combination oi' a frame provided withmeans for adjustably and removably supporting upon it a boring-bit toproject beyond the frame7 a countersinlr-bit projecting beyond an end ofsaid frame to cooperate with such boringbit, a presser-foot adjustablysupported at one side on said frame to adapt it to be raised and loweredrelative to said frame, and turned on said frame, and provided with ashoulder at which said device is adapted to be engaged by saidcountersinlr-bit, and means for releasably securing said presserfoot inadjusted position, for the purpose set forth.

2, In a combination-tool, the combination of a trame provided with meansfor adjustably and removably supporting upon it a boring-bit to projectbeyond the trame, a eountersinlr-bit projecting beyond an end o saidframe to cooperate with such boring-bit, a screw adjustably mounted onsaid trame, a presser-toot secured to said screw to be adjustabletherewith, toward and away V'rom said trame, and comprising a lower ringand an upper ring on said lower ring and relatively movable therewith,and means for holding said rings against separation from each other, forthe pur ose set forth.

3. in a combination-tool, the combination ot a trame provided with meanstor adjustl j l ably and removably supporting upon it a boring-bit toproject beyond the frame, a countersink-bit projecting beyond an end otsaid frame to cooperate with said boring-bit, a screw adjustably securedon said trame, an annular presser-toot surrounding said bits and carriedby said screw to be adjustable therewith, and comprising a lower ringand an upper ring provided with a series of sockets and secured to saidscrew and movable with relation to said lower ring, said upper ringbeing provided with a shoulder with which in trce adjustment oi' saidpresser-toot the countersink-bit engages, and a screw adjustably mountedon said trame and adapted to engage any one of said sockets, for thepurpese set Aforth.

it. 1n a combination-tool for the purpose set forth, the combinationwith a trame, a countersinlr-bit on one side oi the frame, and achamfering implement on the opposite side of said frame, said framebeing adapted to be iitted to a boring-bit with which to cooperate withsaid countersink-bit7 ot astop-bit adapted to cooperate with saidimplement, and means en the trame constructed and arranged to adjustablyand removably support the trame upon said latter to project beyond saidcountersinlr-bit tor boring and countersinking a hole and for similarlysupporting said stop-bit upon the trame relative to said implement forregulating the extent of cham'fering.

5. In a combination-tool7 the combination of a trame provided justwithmeans for ad ably and removably supporting upon 1t a boring-bit toproject beyond the frame, a

' member adjustably mounted in said trame, a

countersink-bit on said member projecting beyond an end of said trame tocooperate with said boring-bit, and means for adjusting said member andwith it said countersinlr-bit relative to suoli boring-bit, comprising ascrew working in the frame and connected with the saidoountersink-bit-equipped member.

AARGN GALPERIN.

In presence of- J. H. LANDES, C. W. WASHBURNE.

boring-bit to cause the

